Oil-pump construction



L'B. WILLIAMS E1' AL Oct. v25

oIL PUMP CONSTRUCTION Filed oct. 14. 192s INVENTORS pipe 4 and upwardly through `the thr'eepipe, prevents the pump be-v quarter inch4 a coming gasbound and to av great extent eliminates the objectionable,accumulation of pafraliiny in the valves and barrel of the pumpen account of the mechanism being at ally times immersedin liquid oil. Furthermore, due to the circuitous travel of the oil on entering the pumpbarrel any sand will be settled out vand substantially all of [admission of the through the'upper perforations '5 in v the outer tubing. ltwill 'also bev vappreciated that the constri'cted upper vpassage between the inner and outer pipe will cause an increase inv lthe rate of flow of the 'oil therehrough, which ratewill be decreasedfin the lower"expansionchamber, thus further insuring thesettling out of entrained sand; AThis improved separation 'arising from `the initial increase in rate of flowof Vthefoil andthe subsequent decrease of the rate in the Vlower chamber is avery desirable and no'velffea- 'ture of the present invention, and onewhich obviates ,the necessity of providing an involved and costly mechanism. p v

' Thev perforation l0 servesY more `as 'an equalizing hole," permitting'a regulatedfinflow-of oil during the :pumping period', and assuringa rsolid head of liquid oil to the suction end of the pump atV all times. `In actual operation the l trouble and expensein'connection with" oil well1 pumping has been materially diminished, primarily due to the decrease in' cost of replacement for pump 'parts and' in Alabor in removing the 'string of tubing, inorderto clean the pump kand valves'o'f accumulated paraffin, which renders the puinpdinoperativej when vthe accumulation has become excessive.'Vv j` Furthermore the assura-nce'ofa. 'solid'liquid head duringthepuinpingoperation and 'also when the well hasbeenpunipedof at the suction end ofthe pump, prevents the g'aswhich carries with abrasive y sand. The `fact thatjthere' isatall Vtimes liquid' on in Contact with ythe pump mechanism; yreduces 'materially the l.excessive wear usuallyf"accompanying f 'the operation of a pump in' ai-idry pump barrel7 andmaintains the paraffin present in solution in suspension. "Asith'e gas is trapped foff bythe existence 'of Vthe/liquid -in a three-quarterv inch pipe,

there is little. or no-dilliculty encountered may be varied without 'depart-ing kfrom the gasfseparated from the oil as it passesv vspeed of flow of with the drying of wax on the pump parts, due to the passage of dry free gas ythrough the pump mechanism. The oil in the pump and three-quarter vinch pipe prevents the' formation of paralhn with its accompanying inconveniences, diliiculties and expense to the fpump operation. i

It will be appreciated that the particular positioning and arrangement of the parts spirit or scope of the invention.

Ve claim as our invention:

1. An oil well pump construction, comprising pump mechanism attached to a tubing including stationary and traveling valves and 'valve cups, mounted upon a pump rod and positioned'within a pump barrel, a tubing extensioi'i below they pump 1nechanism, comprising a narrow elongated upper portion and an expanded lower portion, perforations in the upper portion of the tube extensionand a perforation near 'the lower portion thereof, `a pipewithin the tube extension and of'smaller diameter having van open "lower end, saidv pipe extending from the 'pump` barrel and having communication therewithinto the lower portion of the tube extension.4

2. An oil well Vpump construction,fco1n pump mechanism attached to the tubing', 'includ-ing' stationary and traveling valves and suction elements, said traveling valvesand suctionr elements mounted upon a pump r od,'anjelongated tube extension attached tothe lower end ofthe pump barrel, but blanked olf vfrom communication therelwith, 'said tube extension having a section of increased diameter, Vand terminating` in a closed `end,'a pipe having 'a loweropen end positioned within the: tube extension having communication with the pump'barrel, and terminating inthe enlarged portion of the tube extension, said pipe defining a restricted y passage with the upper portion of the tube andan expansion chamber with the lowerfll portion, perforation's'in thefupperrportion of the tubing below `tlie'pump barrel and a perforation in the enlarged portion of the tubing above the end lof the inside pipe.

f-Oil well pump construction, compris- P15 ing pump mechanismmounted on al pump barrel and attachedtoa tubing-Withiny an oil well "casing, a tube extension below the barrel but blanledoff from communication therewith, said tubing having .a closed lower ex- '120iV iin, and defining therewith an.- upper restricted "passage adapted to increase the etV 'oil therethrough,` and all y l' 1,646,569 Y loner expansion chamber adapted tov cle-l erease the speed of flow of the oilrthe uppery extremity having vcornlnuncaton with the pump barrel and the lower open endl ter- 5 mnating'ntlle enlarged portion of the tube extension. p

4c. A construction, such as that described Ytension and casing. is positioned rabove the tween the enlargedv portionv of the ktube ex -ng in said tube extension. 1 n y v l Y IRVING B. WILLIAMS.; f n JAMES D.v MGGILTQN, e. 

